Features 1、Applicable Size: Thanks to 2 detachable plastic inserts, this hinge locator can be applied to cut and install round or square door hinges, fits for 3in to 5in length hinge and square, 1/4in or 5/8in radius hinge types. 2、Reasonable Design: The hinge router template can adjust the hinge length, thickness, rounded and square corners. Built in depth gauge on the side, to set the depth of the router bit, and help you cut professional mortises. 3、Easy to Use: The hinge template is fitted with a router (not included) to install the door hinge, using a depth gauge to set the depth and cut the hinge shape from the template area. (thin hinge: left side 3 inch, 3‑1/2 inch, 4 inch, thick hinge: right side 4‑1/2 inch, 5 inch). 4、Reliable Structure: The door hinge mortiser template is made of excellent plastic material, with silicone non slip pads on both sides, ensuring stable and reliable use without damaging the door. You can use it with confidence. 5、With 2 Drill Bits: This kit provides a self centering hinge bit to ensure accurate hinge installation. Double headed bit meets more drilling and installation needs, and install the bit on the router (not included) for use. Specification Item Type: Door Hinge Locator Product Material: Plastic Package List 1 x Hinge Locator 2 x Drill Bits